I'm still lookung the perfect song but these are my candidates for now:
It's Different for Girls - Joe Jackson
Careless Whisper - George Michael
Who Knows Were the Time Goes - Christine Collister (Sorry i'm such a cultural desert, I heard this version before the Sandy Denny one)
Here Comes the Sun - The Beatles (and I'm really not a Beatles fan)
If somebody could do a version of Gimme Shelter that combined the best attributes of the Stones original and the (way OTT) Grand Funk version, I think that might trump them all.